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asserts_test.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2015-2022 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package asserts_test
import (
"bytes"
"io"
"strings"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/asserts"
)
type assertsSuite struct{}
var _ = Suite(&assertsSuite{})
func (as *assertsSuite) TestType(c *C) {
c.Check(asserts.Type("test-only"), Equals, asserts.TestOnlyType)
}
func (as *assertsSuite) TestUnknown(c *C) {
c.Check(asserts.Type(""), IsNil)
c.Check(asserts.Type("unknown"), IsNil)
}
func (as *assertsSuite) TestTypeMaxSupportedFormat(c *C) {
c.Check(asserts.Type("test-only").MaxSupportedFormat(), Equals, 1)
}
func (as *assertsSuite) TestTypeNames(c *C) {
c.Check(asserts.TypeNames(), DeepEquals, []string{
"account",
"account-key",
"account-key-request",
"base-declaration",
"confdb",
"confdb-control",
"device-session-request",
"model",
"preseed",
"repair",
"serial",
"serial-request",
"snap-build",
"snap-declaration",
"snap-developer",
"snap-resource-pair",
"snap-resource-revision",
"snap-revision",
"store",
"system-user",
"test-only",
"test-only-2",
"test-only-decl",
"test-only-no-authority",
"test-only-no-authority-pk",
"test-only-rev",
"test-only-seq",
"validation",
"validation-set",
})
}
func (as *assertsSuite) TestMaxSupportedFormats(c *C) {
accountKeyMaxFormat := asserts.AccountKeyType.MaxSupportedFormat()
snapDeclMaxFormat := asserts.SnapDeclarationType.MaxSupportedFormat()
systemUserMaxFormat := asserts.SystemUserType.MaxSupportedFormat()
// validity
c.Check(accountKeyMaxFormat >= 1, Equals, true)
c.Check(snapDeclMaxFormat >= 6, Equals, true)
c.Check(systemUserMaxFormat >= 2, Equals, true)
c.Check(asserts.MaxSupportedFormats(1), DeepEquals, map[string]int{
"account-key": accountKeyMaxFormat,
"snap-declaration": snapDeclMaxFormat,
"system-user": systemUserMaxFormat,
"test-only": 1,
"test-only-seq": 2,
})
// all
maxFormats := asserts.MaxSupportedFormats(0)
c.Assert(maxFormats, HasLen, len(asserts.TypeNames()))
c.Check(maxFormats["test-only"], Equals, 1)
c.Check(maxFormats["test-only-2"], Equals, 0)
c.Check(maxFormats["snap-declaration"], Equals, snapDeclMaxFormat)
}
func (as *assertsSuite) TestSuggestFormat(c *C) {
fmtnum, err := asserts.SuggestFormat(asserts.Type("test-only-2"), nil, nil)
c.Assert(err, IsNil)
c.Check(fmtnum, Equals, 0)
}
func (as *assertsSuite) TestPrimaryKeyHelpers(c *C) {
headers, err := asserts.HeadersFromPrimaryKey(asserts.TestOnlyType, []string{"one"})
c.Assert(err, IsNil)
c.Check(headers, DeepEquals, map[string]string{
"primary-key": "one",
})
headers, err = asserts.HeadersFromPrimaryKey(asserts.TestOnly2Type, []string{"bar", "baz"})
c.Assert(err, IsNil)
c.Check(headers, DeepEquals, map[string]string{
"pk1": "bar",
"pk2": "baz",
})
_, err = asserts.HeadersFromPrimaryKey(asserts.TestOnly2Type, []string{"bar"})
c.Check(err, ErrorMatches, `primary key has wrong length for "test-only-2" assertion`)
_, err = asserts.HeadersFromPrimaryKey(asserts.TestOnly2Type, []string{"", "baz"})
c.Check(err, ErrorMatches, `primary key "pk1" header cannot be empty`)
pk, err := asserts.PrimaryKeyFromHeaders(asserts.TestOnly2Type, headers)
c.Assert(err, IsNil)
c.Check(pk, DeepEquals, []string{"bar", "baz"})
headers["other"] = "foo"
pk1, err := asserts.PrimaryKeyFromHeaders(asserts.TestOnly2Type, headers)
c.Assert(err, IsNil)
c.Check(pk1, DeepEquals, pk)
delete(headers, "pk2")
_, err = asserts.PrimaryKeyFromHeaders(asserts.TestOnly2Type, headers)
c.Check(err, ErrorMatches, `must provide primary key: pk2`)
}
func (as *assertsSuite) TestPrimaryKeyHelpersOptionalPrimaryKeys(c *C) {
// optional primary key headers
r := asserts.MockOptionalPrimaryKey(asserts.TestOnlyType, "opt1", "o1-defl")
defer r()
pk, err := asserts.PrimaryKeyFromHeaders(asserts.TestOnlyType, map[string]string{"primary-key": "k1"})
c.Assert(err, IsNil)
c.Check(pk, DeepEquals, []string{"k1", "o1-defl"})
pk, err = asserts.PrimaryKeyFromHeaders(asserts.TestOnlyType, map[string]string{"primary-key": "k1", "opt1": "B"})
c.Assert(err, IsNil)
c.Check(pk, DeepEquals, []string{"k1", "B"})
hdrs, err := asserts.HeadersFromPrimaryKey(asserts.TestOnlyType, []string{"k1", "B"})
c.Assert(err, IsNil)
c.Check(hdrs, DeepEquals, map[string]string{
"primary-key": "k1",
"opt1": "B",
})
hdrs, err = asserts.HeadersFromPrimaryKey(asserts.TestOnlyType, []string{"k1"})
c.Assert(err, IsNil)
c.Check(hdrs, DeepEquals, map[string]string{
"primary-key": "k1",
"opt1": "o1-defl",
})
_, err = asserts.HeadersFromPrimaryKey(asserts.TestOnlyType, nil)
c.Check(err, ErrorMatches, `primary key has wrong length for "test-only" assertion`)
_, err = asserts.HeadersFromPrimaryKey(asserts.TestOnlyType, []string{"pk", "opt1", "what"})
c.Check(err, ErrorMatches, `primary key has wrong length for "test-only" assertion`)
}
func (as *assertsSuite) TestRef(c *C) {
ref := &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz")
}
func (as *assertsSuite) TestRefString(c *C) {
ref := &asserts.Ref{
Type: asserts.AccountType,
PrimaryKey: []string{"canonical"},
}
c.Check(ref.String(), Equals, "account (canonical)")
ref = &asserts.Ref{
Type: asserts.SnapDeclarationType,
PrimaryKey: []string{"18", "SNAPID"},
}
c.Check(ref.String(), Equals, "snap-declaration (SNAPID; series:18)")
ref = &asserts.Ref{
Type: asserts.ModelType,
PrimaryKey: []string{"18", "BRAND", "baz-3000"},
}
c.Check(ref.String(), Equals, "model (baz-3000; series:18 brand-id:BRAND)")
// broken primary key
ref = &asserts.Ref{
Type: asserts.ModelType,
PrimaryKey: []string{"18"},
}
c.Check(ref.String(), Equals, "model (???)")
ref = &asserts.Ref{
Type: asserts.TestOnlyNoAuthorityType,
}
c.Check(ref.String(), Equals, "test-only-no-authority (-)")
}
func (as *assertsSuite) TestRefResolveError(c *C) {
ref := &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc"},
}
_, err := ref.Resolve(nil)
c.Check(err, ErrorMatches, `"test-only-2" assertion reference primary key has the wrong length \(expected \[pk1 pk2\]\): \[abc\]`)
}
func (as *assertsSuite) TestReducePrimaryKey(c *C) {
// optional primary key headers
defer asserts.MockOptionalPrimaryKey(asserts.TestOnly2Type, "opt1", "o1-defl")()
defer asserts.MockOptionalPrimaryKey(asserts.TestOnly2Type, "opt2", "o2-defl")()
tests := []struct {
pk []string
reduced []string
}{
{nil, nil},
{[]string{"k1"}, []string{"k1"}},
{[]string{"k1", "k2"}, []string{"k1", "k2"}},
{[]string{"k1", "k2", "A"}, []string{"k1", "k2", "A"}},
{[]string{"k1", "k2", "o1-defl"}, []string{"k1", "k2"}},
{[]string{"k1", "k2", "A", "o2-defl"}, []string{"k1", "k2", "A"}},
{[]string{"k1", "k2", "A", "B"}, []string{"k1", "k2", "A", "B"}},
{[]string{"k1", "k2", "o1-defl", "B"}, []string{"k1", "k2", "o1-defl", "B"}},
{[]string{"k1", "k2", "o1-defl", "o2-defl"}, []string{"k1", "k2"}},
{[]string{"k1", "k2", "o1-defl", "o2-defl", "what"}, []string{"k1", "k2", "o1-defl", "o2-defl", "what"}},
}
for _, t := range tests {
c.Check(asserts.ReducePrimaryKey(asserts.TestOnly2Type, t.pk), DeepEquals, t.reduced)
}
}
func (as *assertsSuite) TestRefOptionalPrimaryKeys(c *C) {
// optional primary key headers
defer asserts.MockOptionalPrimaryKey(asserts.TestOnly2Type, "opt1", "o1-defl")()
defer asserts.MockOptionalPrimaryKey(asserts.TestOnly2Type, "opt2", "o2-defl")()
ref := &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc)`)
ref = &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz", "o1-defl"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc)`)
ref = &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz", "o1-defl", "o2-defl"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc)`)
ref = &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz", "A"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz/A")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc opt1:A)`)
ref = &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz", "A", "o2-defl"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz/A")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc opt1:A)`)
ref = &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz", "o1-defl", "B"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz/o1-defl/B")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc opt2:B)`)
ref = &asserts.Ref{
Type: asserts.TestOnly2Type,
PrimaryKey: []string{"abc", "xyz", "A", "B"},
}
c.Check(ref.Unique(), Equals, "test-only-2/abc/xyz/A/B")
c.Check(ref.String(), Equals, `test-only-2 (xyz; pk1:abc opt1:A opt2:B)`)
}
func (as *assertsSuite) TestAcceptablePrimaryKey(c *C) {
// optional primary key headers
defer asserts.MockOptionalPrimaryKey(asserts.TestOnly2Type, "opt1", "o1-defl")()
defer asserts.MockOptionalPrimaryKey(asserts.TestOnly2Type, "opt2", "o2-defl")()
tests := []struct {
pk []string
ok bool
}{
{nil, false},
{[]string{"k1"}, false},
{[]string{"k1", "k2"}, true},
{[]string{"k1", "k2", "A"}, true},
{[]string{"k1", "k2", "o1-defl"}, true},
{[]string{"k1", "k2", "A", "B"}, true},
{[]string{"k1", "k2", "o1-defl", "o2-defl", "what"}, false},
}
for _, t := range tests {
c.Check(asserts.TestOnly2Type.AcceptablePrimaryKey(t.pk), Equals, t.ok)
}
}
func (as *assertsSuite) TestAtRevisionString(c *C) {
ref := asserts.Ref{
Type: asserts.AccountType,
PrimaryKey: []string{"canonical"},
}
at := &asserts.AtRevision{
Ref: ref,
}
c.Check(at.String(), Equals, "account (canonical) at revision 0")
at = &asserts.AtRevision{
Ref: ref,
Revision: asserts.RevisionNotKnown,
}
c.Check(at.String(), Equals, "account (canonical)")
}
const exKeyID = "Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij"
const exampleEmptyBodyAllDefaults = "type: test-only\n" +
"authority-id: auth-id1\n" +
"primary-key: abc\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij" +
"\n\n" +
"AXNpZw=="
func (as *assertsSuite) TestDecodeEmptyBodyAllDefaults(c *C) {
a, err := asserts.Decode([]byte(exampleEmptyBodyAllDefaults))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
_, ok := a.(*asserts.TestOnly)
c.Check(ok, Equals, true)
c.Check(a.Revision(), Equals, 0)
c.Check(a.Format(), Equals, 0)
c.Check(a.Body(), IsNil)
c.Check(a.Header("header1"), IsNil)
c.Check(a.HeaderString("header1"), Equals, "")
c.Check(a.AuthorityID(), Equals, "auth-id1")
c.Check(a.SignKeyID(), Equals, exKeyID)
}
const exampleEmptyBodyOptionalPrimaryKeySet = "type: test-only\n" +
"authority-id: auth-id1\n" +
"primary-key: abc\n" +
"opt1: A\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij" +
"\n\n" +
"AXNpZw=="
func (as *assertsSuite) TestDecodeOptionalPrimaryKeys(c *C) {
r := asserts.MockOptionalPrimaryKey(asserts.TestOnlyType, "opt1", "o1-defl")
defer r()
a, err := asserts.Decode([]byte(exampleEmptyBodyAllDefaults))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
_, ok := a.(*asserts.TestOnly)
c.Check(ok, Equals, true)
c.Check(a.Revision(), Equals, 0)
c.Check(a.Format(), Equals, 0)
c.Check(a.Body(), IsNil)
c.Check(a.HeaderString("opt1"), Equals, "o1-defl")
c.Check(a.Header("header1"), IsNil)
c.Check(a.HeaderString("header1"), Equals, "")
c.Check(a.AuthorityID(), Equals, "auth-id1")
c.Check(a.SignKeyID(), Equals, exKeyID)
a, err = asserts.Decode([]byte(exampleEmptyBodyOptionalPrimaryKeySet))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
_, ok = a.(*asserts.TestOnly)
c.Check(ok, Equals, true)
c.Check(a.Revision(), Equals, 0)
c.Check(a.Format(), Equals, 0)
c.Check(a.Body(), IsNil)
c.Check(a.HeaderString("opt1"), Equals, "A")
c.Check(a.Header("header1"), IsNil)
c.Check(a.HeaderString("header1"), Equals, "")
c.Check(a.AuthorityID(), Equals, "auth-id1")
c.Check(a.SignKeyID(), Equals, exKeyID)
}
const exampleEmptyBody2NlNl = "type: test-only\n" +
"authority-id: auth-id1\n" +
"primary-key: xyz\n" +
"revision: 0\n" +
"body-length: 0\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij" +
"\n\n" +
"\n\n" +
"AXNpZw==\n"
func (as *assertsSuite) TestDecodeEmptyBodyNormalize2NlNl(c *C) {
a, err := asserts.Decode([]byte(exampleEmptyBody2NlNl))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
c.Check(a.Revision(), Equals, 0)
c.Check(a.Format(), Equals, 0)
c.Check(a.Body(), IsNil)
}
const exampleBodyAndExtraHeaders = "type: test-only\n" +
"format: 1\n" +
"authority-id: auth-id2\n" +
"primary-key: abc\n" +
"revision: 5\n" +
"header1: value1\n" +
"header2: value2\n" +
"body-length: 8\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"THE-BODY" +
"\n\n" +
"AXNpZw==\n"
func (as *assertsSuite) TestDecodeWithABodyAndExtraHeaders(c *C) {
a, err := asserts.Decode([]byte(exampleBodyAndExtraHeaders))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
c.Check(a.AuthorityID(), Equals, "auth-id2")
c.Check(a.SignKeyID(), Equals, exKeyID)
c.Check(a.Header("primary-key"), Equals, "abc")
c.Check(a.Revision(), Equals, 5)
c.Check(a.Format(), Equals, 1)
c.Check(a.SupportedFormat(), Equals, true)
c.Check(a.Header("header1"), Equals, "value1")
c.Check(a.Header("header2"), Equals, "value2")
c.Check(a.Body(), DeepEquals, []byte("THE-BODY"))
}
const exampleUnsupportedFormat = "type: test-only\n" +
"format: 77\n" +
"authority-id: auth-id2\n" +
"primary-key: abc\n" +
"revision: 5\n" +
"header1: value1\n" +
"header2: value2\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"AXNpZw==\n"
func (as *assertsSuite) TestDecodeUnsupportedFormat(c *C) {
a, err := asserts.Decode([]byte(exampleUnsupportedFormat))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
c.Check(a.AuthorityID(), Equals, "auth-id2")
c.Check(a.SignKeyID(), Equals, exKeyID)
c.Check(a.Header("primary-key"), Equals, "abc")
c.Check(a.Revision(), Equals, 5)
c.Check(a.Format(), Equals, 77)
c.Check(a.SupportedFormat(), Equals, false)
}
func (as *assertsSuite) TestDecodeGetSignatureBits(c *C) {
content := "type: test-only\n" +
"authority-id: auth-id1\n" +
"primary-key: xyz\n" +
"revision: 5\n" +
"header1: value1\n" +
"body-length: 8\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"THE-BODY"
encoded := content +
"\n\n" +
"AXNpZw=="
a, err := asserts.Decode([]byte(encoded))
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
c.Check(a.AuthorityID(), Equals, "auth-id1")
c.Check(a.SignKeyID(), Equals, exKeyID)
cont, signature := a.Signature()
c.Check(signature, DeepEquals, []byte("AXNpZw=="))
c.Check(cont, DeepEquals, []byte(content))
}
func (as *assertsSuite) TestDecodeNoSignatureSplit(c *C) {
for _, encoded := range []string{"", "foo"} {
_, err := asserts.Decode([]byte(encoded))
c.Check(err, ErrorMatches, "assertion content/signature separator not found")
}
}
func (as *assertsSuite) TestDecodeHeaderParsingErrors(c *C) {
headerParsingErrorsTests := []struct{ encoded, expectedErr string }{
{string([]byte{255, '\n', '\n'}), "header is not utf8"},
{"foo: a\nbar\n\n", `header entry missing ':' separator: "bar"`},
{"TYPE: foo\n\n", `invalid header name: "TYPE"`},
{"foo: a\nbar:>\n\n", `header entry should have a space or newline \(for multiline\) before value: "bar:>"`},
{"foo: a\nbar:\n\n", `expected 4 chars nesting prefix after multiline introduction "bar:": EOF`},
{"foo: a\nbar:\nbaz: x\n\n", `expected 4 chars nesting prefix after multiline introduction "bar:": "baz: x"`},
{"foo: a:\nbar: b\nfoo: x\n\n", `repeated header: "foo"`},
}
for _, test := range headerParsingErrorsTests {
_, err := asserts.Decode([]byte(test.encoded))
c.Check(err, ErrorMatches, "parsing assertion headers: "+test.expectedErr)
}
}
func (as *assertsSuite) TestDecodeInvalid(c *C) {
keyIDHdr := "sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n"
encoded := "type: test-only\n" +
"format: 0\n" +
"authority-id: auth-id\n" +
"primary-key: abc\n" +
"revision: 0\n" +
"body-length: 5\n" +
keyIDHdr +
"\n" +
"abcde" +
"\n\n" +
"AXNpZw=="
invalidAssertTests := []struct{ original, invalid, expectedErr string }{
{"body-length: 5", "body-length: z", `assertion: "body-length" header is not an integer: z`},
{"body-length: 5", "body-length: 3", "assertion body length and declared body-length don't match: 5 != 3"},
{"authority-id: auth-id\n", "", `assertion: "authority-id" header is mandatory`},
{"authority-id: auth-id\n", "authority-id: \n", `assertion: "authority-id" header should not be empty`},
{keyIDHdr, "", `assertion: "sign-key-sha3-384" header is mandatory`},
{keyIDHdr, "sign-key-sha3-384: \n", `assertion: "sign-key-sha3-384" header should not be empty`},
{keyIDHdr, "sign-key-sha3-384: $\n", `assertion: "sign-key-sha3-384" header cannot be decoded: .*`},
{keyIDHdr, "sign-key-sha3-384: eHl6\n", `assertion: "sign-key-sha3-384" header does not have the expected bit length: 24`},
{"AXNpZw==", "", "empty assertion signature"},
{"type: test-only\n", "", `assertion: "type" header is mandatory`},
{"type: test-only\n", "type: unknown\n", `unknown assertion type: "unknown"`},
{"revision: 0\n", "revision: Z\n", `assertion: "revision" header is not an integer: Z`},
{"revision: 0\n", "revision:\n - 1\n", `assertion: "revision" header is not an integer: \[1\]`},
{"revision: 0\n", "revision: 00\n", `assertion: "revision" header has invalid prefix zeros: 00`},
{"revision: 0\n", "revision: -10\n", "assertion: revision should be positive: -10"},
{"revision: 0\n", "revision: 99999999999999999999\n", `assertion: "revision" header is out of range: 99999999999999999999`},
{"format: 0\n", "format: Z\n", `assertion: "format" header is not an integer: Z`},
{"format: 0\n", "format: -10\n", "assertion: format should be positive: -10"},
{"primary-key: abc\n", "", `assertion test-only: "primary-key" header is mandatory`},
{"primary-key: abc\n", "primary-key:\n - abc\n", `assertion test-only: "primary-key" header must be a string`},
{"primary-key: abc\n", "primary-key: a/c\n", `assertion test-only: "primary-key" primary key header cannot contain '/'`},
{"abcde", "ab\xffde", "assertion body is not utf8"},
}
for _, test := range invalidAssertTests {
invalid := strings.Replace(encoded, test.original, test.invalid, 1)
_, err := asserts.Decode([]byte(invalid))
c.Check(err, ErrorMatches, test.expectedErr)
}
}
func (as *assertsSuite) TestDecodeNoAuthorityInvalid(c *C) {
invalid := "type: test-only-no-authority\n" +
"authority-id: auth-id1\n" +
"hdr: FOO\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij" +
"\n\n" +
"openpgp c2ln"
_, err := asserts.Decode([]byte(invalid))
c.Check(err, ErrorMatches, `"test-only-no-authority" assertion cannot have authority-id set`)
}
func checkContent(c *C, a asserts.Assertion, encoded string) {
expected, err := asserts.Decode([]byte(encoded))
c.Assert(err, IsNil)
expectedCont, _ := expected.Signature()
cont, _ := a.Signature()
c.Check(cont, DeepEquals, expectedCont)
}
func (as *assertsSuite) TestEncoderDecoderHappy(c *C) {
stream := new(bytes.Buffer)
enc := asserts.NewEncoder(stream)
enc.WriteEncoded([]byte(exampleEmptyBody2NlNl))
enc.WriteEncoded([]byte(exampleBodyAndExtraHeaders))
enc.WriteEncoded([]byte(exampleEmptyBodyAllDefaults))
decoder := asserts.NewDecoder(stream)
a, err := decoder.Decode()
c.Assert(err, IsNil)
c.Check(a.Type(), Equals, asserts.TestOnlyType)
_, ok := a.(*asserts.TestOnly)
c.Check(ok, Equals, true)
checkContent(c, a, exampleEmptyBody2NlNl)
a, err = decoder.Decode()
c.Assert(err, IsNil)
checkContent(c, a, exampleBodyAndExtraHeaders)
a, err = decoder.Decode()
c.Assert(err, IsNil)
checkContent(c, a, exampleEmptyBodyAllDefaults)
a, err = decoder.Decode()
c.Assert(err, Equals, io.EOF)
c.Check(a, IsNil)
}
func (as *assertsSuite) TestDecodeEmptyStream(c *C) {
stream := new(bytes.Buffer)
decoder := asserts.NewDecoder(stream)
_, err := decoder.Decode()
c.Check(err, Equals, io.EOF)
}
func (as *assertsSuite) TestDecoderHappyWithSeparatorsVariations(c *C) {
streams := []string{
exampleBodyAndExtraHeaders,
exampleEmptyBody2NlNl,
exampleEmptyBodyAllDefaults,
}
for _, streamData := range streams {
stream := bytes.NewBufferString(streamData)
decoder := asserts.NewDecoderStressed(stream, 16, 1024, 1024, 1024)
a, err := decoder.Decode()
c.Assert(err, IsNil, Commentf("stream: %q", streamData))
checkContent(c, a, streamData)
a, err = decoder.Decode()
c.Check(a, IsNil)
c.Check(err, Equals, io.EOF, Commentf("stream: %q", streamData))
}
}
func (as *assertsSuite) TestDecoderHappyWithTrailerDoubleNewlines(c *C) {
streams := []string{
exampleBodyAndExtraHeaders,
exampleEmptyBody2NlNl,
exampleEmptyBodyAllDefaults,
}
for _, streamData := range streams {
stream := bytes.NewBufferString(streamData)
if strings.HasSuffix(streamData, "\n") {
stream.WriteString("\n")
} else {
stream.WriteString("\n\n")
}
decoder := asserts.NewDecoderStressed(stream, 16, 1024, 1024, 1024)
a, err := decoder.Decode()
c.Assert(err, IsNil, Commentf("stream: %q", streamData))
checkContent(c, a, streamData)
a, err = decoder.Decode()
c.Check(a, IsNil)
c.Check(err, Equals, io.EOF, Commentf("stream: %q", streamData))
}
}
func (as *assertsSuite) TestDecoderUnexpectedEOF(c *C) {
streamData := exampleBodyAndExtraHeaders + "\n" + exampleEmptyBodyAllDefaults
fstHeadEnd := strings.Index(exampleBodyAndExtraHeaders, "\n\n")
sndHeadEnd := len(exampleBodyAndExtraHeaders) + 1 + strings.Index(exampleEmptyBodyAllDefaults, "\n\n")
for _, brk := range []int{1, fstHeadEnd / 2, fstHeadEnd, fstHeadEnd + 1, fstHeadEnd + 2, fstHeadEnd + 6} {
stream := bytes.NewBufferString(streamData[:brk])
decoder := asserts.NewDecoderStressed(stream, 16, 1024, 1024, 1024)
_, err := decoder.Decode()
c.Check(err, Equals, io.ErrUnexpectedEOF, Commentf("brk: %d", brk))
}
for _, brk := range []int{sndHeadEnd, sndHeadEnd + 1} {
stream := bytes.NewBufferString(streamData[:brk])
decoder := asserts.NewDecoder(stream)
_, err := decoder.Decode()
c.Assert(err, IsNil)
_, err = decoder.Decode()
c.Check(err, Equals, io.ErrUnexpectedEOF, Commentf("brk: %d", brk))
}
}
func (as *assertsSuite) TestDecoderBrokenBodySeparation(c *C) {
streamData := strings.Replace(exampleBodyAndExtraHeaders, "THE-BODY\n\n", "THE-BODY", 1)
decoder := asserts.NewDecoder(bytes.NewBufferString(streamData))
_, err := decoder.Decode()
c.Assert(err, ErrorMatches, "missing content/signature separator")
streamData = strings.Replace(exampleBodyAndExtraHeaders, "THE-BODY\n\n", "THE-BODY\n", 1)
decoder = asserts.NewDecoder(bytes.NewBufferString(streamData))
_, err = decoder.Decode()
c.Assert(err, ErrorMatches, "missing content/signature separator")
}
func (as *assertsSuite) TestDecoderHeadTooBig(c *C) {
decoder := asserts.NewDecoderStressed(bytes.NewBufferString(exampleBodyAndExtraHeaders), 4, 4, 1024, 1024)
_, err := decoder.Decode()
c.Assert(err, ErrorMatches, `error reading assertion headers: maximum size exceeded while looking for delimiter "\\n\\n"`)
}
func (as *assertsSuite) TestDecoderBodyTooBig(c *C) {
decoder := asserts.NewDecoderStressed(bytes.NewBufferString(exampleBodyAndExtraHeaders), 1024, 1024, 5, 1024)
_, err := decoder.Decode()
c.Assert(err, ErrorMatches, "assertion body length 8 exceeds maximum body size")
}
func (as *assertsSuite) TestDecoderSignatureTooBig(c *C) {
decoder := asserts.NewDecoderStressed(bytes.NewBufferString(exampleBodyAndExtraHeaders), 4, 1024, 1024, 7)
_, err := decoder.Decode()
c.Assert(err, ErrorMatches, `error reading assertion signature: maximum size exceeded while looking for delimiter "\\n\\n"`)
}
func (as *assertsSuite) TestDecoderDefaultMaxBodySize(c *C) {
enc := strings.Replace(exampleBodyAndExtraHeaders, "body-length: 8", "body-length: 2097153", 1)
decoder := asserts.NewDecoder(bytes.NewBufferString(enc))
_, err := decoder.Decode()
c.Assert(err, ErrorMatches, "assertion body length 2097153 exceeds maximum body size")
}
func (as *assertsSuite) TestDecoderWithTypeMaxBodySize(c *C) {
ex1 := strings.Replace(exampleBodyAndExtraHeaders, "body-length: 8", "body-length: 2097152", 1)
ex1 = strings.Replace(ex1, "THE-BODY", strings.Repeat("B", 2*1024*1024), 1)
ex1toobig := strings.Replace(exampleBodyAndExtraHeaders, "body-length: 8", "body-length: 2097153", 1)
ex1toobig = strings.Replace(ex1toobig, "THE-BODY", strings.Repeat("B", 2*1024*1024+1), 1)
const ex2 = `type: test-only-2
authority-id: auth-id1
pk1: foo
pk2: bar
body-length: 3
sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij
XYZ
AXNpZw==`
decoder := asserts.NewDecoderWithTypeMaxBodySize(bytes.NewBufferString(ex1+"\n"+ex2), map[*asserts.AssertionType]int{
asserts.TestOnly2Type: 3,
})
a1, err := decoder.Decode()
c.Assert(err, IsNil)
c.Check(a1.Body(), HasLen, 2*1024*1024)
a2, err := decoder.Decode()
c.Assert(err, IsNil)
c.Check(a2.Body(), DeepEquals, []byte("XYZ"))
decoder = asserts.NewDecoderWithTypeMaxBodySize(bytes.NewBufferString(ex1+"\n"+ex2), map[*asserts.AssertionType]int{
asserts.TestOnly2Type: 2,
})
a1, err = decoder.Decode()
c.Assert(err, IsNil)
c.Check(a1.Body(), HasLen, 2*1024*1024)
_, err = decoder.Decode()
c.Assert(err, ErrorMatches, `assertion body length 3 exceeds maximum body size 2 for "test-only-2" assertions`)
decoder = asserts.NewDecoderWithTypeMaxBodySize(bytes.NewBufferString(ex2+"\n\n"+ex1toobig), map[*asserts.AssertionType]int{
asserts.TestOnly2Type: 3,
})
a2, err = decoder.Decode()
c.Assert(err, IsNil)
c.Check(a2.Body(), DeepEquals, []byte("XYZ"))
_, err = decoder.Decode()
c.Assert(err, ErrorMatches, "assertion body length 2097153 exceeds maximum body size")
}
func (as *assertsSuite) TestEncode(c *C) {
encoded := []byte("type: test-only\n" +
"authority-id: auth-id2\n" +
"primary-key: xyz\n" +
"revision: 5\n" +
"header1: value1\n" +
"header2: value2\n" +
"body-length: 8\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"THE-BODY" +
"\n\n" +
"AXNpZw==")
a, err := asserts.Decode(encoded)
c.Assert(err, IsNil)
encodeRes := asserts.Encode(a)
c.Check(encodeRes, DeepEquals, encoded)
}
func (as *assertsSuite) TestEncoderOK(c *C) {
encoded := []byte("type: test-only\n" +
"authority-id: auth-id2\n" +
"primary-key: xyzyz\n" +
"revision: 5\n" +
"header1: value1\n" +
"header2: value2\n" +
"body-length: 8\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"THE-BODY" +
"\n\n" +
"AXNpZw==")
a0, err := asserts.Decode(encoded)
c.Assert(err, IsNil)
cont0, _ := a0.Signature()
stream := new(bytes.Buffer)
enc := asserts.NewEncoder(stream)
enc.Encode(a0)
c.Check(bytes.HasSuffix(stream.Bytes(), []byte{'\n'}), Equals, true)
dec := asserts.NewDecoder(stream)
a1, err := dec.Decode()
c.Assert(err, IsNil)
cont1, _ := a1.Signature()
c.Check(cont1, DeepEquals, cont0)
}
func (as *assertsSuite) TestEncoderSingleDecodeOK(c *C) {
encoded := []byte("type: test-only\n" +
"authority-id: auth-id2\n" +
"primary-key: abc\n" +
"revision: 5\n" +
"header1: value1\n" +
"header2: value2\n" +
"body-length: 8\n" +
"sign-key-sha3-384: Jv8_JiHiIzJVcO9M55pPdqSDWUvuhfDIBJUS-3VW7F_idjix7Ffn5qMxB21ZQuij\n\n" +
"THE-BODY" +
"\n\n" +
"AXNpZw==")
a0, err := asserts.Decode(encoded)
c.Assert(err, IsNil)
cont0, _ := a0.Signature()
stream := new(bytes.Buffer)
enc := asserts.NewEncoder(stream)
enc.Encode(a0)
a1, err := asserts.Decode(stream.Bytes())
c.Assert(err, IsNil)
cont1, _ := a1.Signature()
c.Check(cont1, DeepEquals, cont0)
}
func (as *assertsSuite) TestSignFormatValidityEmptyBody(c *C) {
headers := map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "0",
}
a, err := asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, nil, testPrivKey1)
c.Assert(err, IsNil)
_, err = asserts.Decode(asserts.Encode(a))
c.Check(err, IsNil)
}
func (as *assertsSuite) TestSignFormatValidityNonEmptyBody(c *C) {
headers := map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "0",
}
body := []byte("THE-BODY")
a, err := asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, body, testPrivKey1)
c.Assert(err, IsNil)
c.Check(a.Body(), DeepEquals, body)
decoded, err := asserts.Decode(asserts.Encode(a))
c.Assert(err, IsNil)
c.Check(decoded.Body(), DeepEquals, body)
}
func (as *assertsSuite) TestSignFormatValiditySupportMultilineHeaderValues(c *C) {
headers := map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "0",
}
multilineVals := []string{
"a\n",
"\na",
"a\n\b\nc",
"a\n\b\nc\n",
"\na\n",
"\n\na\n\nb\n\nc",
}
for _, multilineVal := range multilineVals {
headers["multiline"] = multilineVal
if len(multilineVal)%2 == 1 {
headers["odd"] = "true"
}
a, err := asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, nil, testPrivKey1)
c.Assert(err, IsNil)
decoded, err := asserts.Decode(asserts.Encode(a))
c.Assert(err, IsNil)
c.Check(decoded.Header("multiline"), Equals, multilineVal)
}
}
func (as *assertsSuite) TestSignFormatAndRevision(c *C) {
headers := map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "0",
"format": "1",
"revision": "11",
}
a, err := asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, nil, testPrivKey1)
c.Assert(err, IsNil)
c.Check(a.Revision(), Equals, 11)
c.Check(a.Format(), Equals, 1)
c.Check(a.SupportedFormat(), Equals, true)
a1, err := asserts.Decode(asserts.Encode(a))
c.Assert(err, IsNil)
c.Check(a1.Revision(), Equals, 11)
c.Check(a1.Format(), Equals, 1)
c.Check(a1.SupportedFormat(), Equals, true)
}
func (as *assertsSuite) TestSignFormatOptionalPrimaryKeys(c *C) {
r := asserts.MockOptionalPrimaryKey(asserts.TestOnlyType, "opt1", "o1-defl")
defer r()
headers := map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "k1",
"header1": "a",
}
a, err := asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, nil, testPrivKey1)
c.Assert(err, IsNil)
b := asserts.Encode(a)
c.Check(bytes.HasPrefix(b, []byte(`type: test-only
authority-id: auth-id1
primary-key: k1
header1:`)), Equals, true)
c.Check(a.HeaderString("opt1"), Equals, "o1-defl")
_, err = asserts.Decode(b)
c.Check(err, IsNil)
// defaults are always normalized away
headers = map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "k1",
"opt1": "o1-defl",
"header1": "a",
}
a, err = asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, nil, testPrivKey1)
c.Assert(err, IsNil)
b = asserts.Encode(a)
c.Check(bytes.HasPrefix(b, []byte(`type: test-only
authority-id: auth-id1
primary-key: k1
header1:`)), Equals, true)
c.Check(a.HeaderString("opt1"), Equals, "o1-defl")
_, err = asserts.Decode(b)
c.Check(err, IsNil)
headers = map[string]interface{}{
"authority-id": "auth-id1",
"primary-key": "k1",
"opt1": "A",
"header1": "a",
}
a, err = asserts.AssembleAndSignInTest(asserts.TestOnlyType, headers, nil, testPrivKey1)
c.Assert(err, IsNil)
b = asserts.Encode(a)
c.Check(bytes.HasPrefix(b, []byte(`type: test-only
authority-id: auth-id1